package com.sxbbc.api.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sxbbc.api.common.CustomerMapping;
import com.sxbbc.common.basics.exceptions.ThrowJsonException;
import com.sxbbc.common.basics.utils.token.TokenUtils;
import com.sxbbc.common.core.service.system.login.LoginTokenService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import java.util.ArrayList;
import java.util.List;

public class LoginInterceptor extends HandlerInterceptorAdapter {

    @Autowired
    private LoginTokenService loginTokenService;

    /**
     * 在业务处理器处理请求之前被调用
     * 如果返回false
     * 从当前的拦截器往回执行所有拦截器的afterCompletion(),再退出拦截器链
     * 如果返回true
     * 执行下一个拦截器,直到所有的拦截器都执行完毕
     * 再执行被拦截的Controller
     * 然后进入拦截器链,
     * 从最后一个拦截器往回执行所有的postHandle()
     * 接着再从最后一个拦截器往回执行所有的afterCompletion()
     */
    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response, Object handler) throws Exception {
        response.setCharacterEncoding("utf-8");
        String requestURI = request.getRequestURI();
        String requestToken = TokenUtils.getToken(request);
        System.out.println(request.getServletPath());


        if (StringUtils.isNotBlank(requestToken)) {
            Integer cid = loginTokenService.validLoginCid(requestToken);
            if (cid != null) {
                return true;
            } else {
                response.setContentType("application/json;charset=UTF-8");
                response.addHeader("Access-Control-Allow-Credentials", "true");
                response.addHeader("Access-Control-Allow-Origin", "*");
                response.addHeader("Transfer-Encoding", "chunked");
                response.addHeader("Vary", "Origin");

                return false;
            }
        } else {
            //处于拦截链中，但是部分接口需要放行的url
            List<String> allowUrls = new ArrayList<>();
            allowUrls.add(CustomerMapping.SHOW_PLAT_DEAL_DATA);
            if (allowUrls.contains(requestURI)) {
                return true;
            } else {
                /*response.setContentType("application/json;charset=UTF-8");
                response.addHeader("Access-Control-Allow-Credentials", "true");
                response.addHeader("Access-Control-Allow-Origin", "*");
                response.addHeader("Transfer-Encoding", "chunked");
                response.addHeader("Vary", "Origin");

                return false ;*/
                throw new ThrowJsonException("997");
            }
        }
        /*String token = request.getParameter("token");
        if (StringUtils.isNotBlank(token)) {
            LoginDto loginDto = loginTokenService.validLoginLoginDto(token);
            if (loginDto != null) {
                return true;
            }else{
                return false;
            }
        }
        return true;*/
    }

    /**
     * 在业务处理器处理请求执行完成后,生成视图之前执行的动作
     * 可在modelAndView中加入数据，比如当前时间
     */
    @Override
    public void postHandle(HttpServletRequest request,
                           HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
    }

    /**
     * 在DispatcherServlet完全处理完请求后被调用,可用于清理资源等
     * 当有拦截器抛出异常时,会从当前拦截器往回执行所有的拦截器的afterCompletion()
     */
    @SuppressWarnings("deprecation")
    @Override
    public void afterCompletion(HttpServletRequest request,
                                HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        response.setHeader("msg", "Signatures error");
        throw new RuntimeException("Signatures error");
    }
}
